This handy Spectrum Math Grade 4 Answer Key Chapter 7 Lesson 7.11 Problem Solving provides detailed answers for the workbook questions.
Spectrum Math Grade 4 Chapter 7 Lesson 7.11 Problem Solving Answers Key
Solve each problem. Show your work.
Question 1.
John cleared a vacant lot to plant a garden. The lot measured 35 feet by 15 feet. What is the perimeter of the garden lot?
The perimeter of the lot is ______________ feet.
Answer:
The perimeter of the lot is 100 feet.
Explanation:
Given,
length of the garden lot = 35 feet
Width of the garden lot = 15 feet
Perimeter of the garden lot = 2 ( L + B)
= 2 (35 + 15)
= 2 (50)
= 100 feet.
Question 2.
Freda is putting carpet down in a room that measures 20 feet long by 30 feet wide. What is the area of the room?
The area is _____________ square feet.
Answer:
The area is 600 square feet.
Explanation:
Given,
Length of the room = 20 feet
Width of the room = 30 feet
Area of the room = 20 × 30
= 600 square feet.
Question 3.
The zoo is building a new hippo pool that will measure 55 feet by 75 feet. What is the area of the pool?
The area is _____________ square feet.
Answer:
The area is 4125 square feet.
Explanation:
Given,
Length of the pool = 55 feet
Width of the pool = 75 feet
Area = Length × Width
= 55 × 75
= 4125 square feet.
Question 4.
Gabriel built a cage for his tropical birds. The cage measures 14 feet by 12 feet. What is the perimeter of the cage?
The perimeter of the cage is _____________ feet.
Answer:
The perimeter of the cage is 52 feet.
Explanation:
Given,
Length of the cage = 14 feet
Width of the cage = 12 feet
Perimeter = 2 (l +b)
= 2 (14 + 12)
= 2 (26)
= 52 feet.
Question 5.
The Foster’s deck was almost finished. Each side of the square deck was 25 feet long. What was the area of the deck?
The area was ______________ square feet.
Answer:
The area was 625 square feet.
Explanation:
Given,
Side of the square deck = 25 feet
Area of the square = S × S
= 25 × 25
= 625 square feet.
Question 6.
The length of the walking track is 103 feet and the width is 50 feet. What is the perimeter of the track?
The perimeter is _____________ feet.
Answer:
The perimeter is 306 feet.
Explanation:
Given,
Length = 103 feet and width = 50 feet
Perimeter = 2 (l+b)
= 2 (103 + 50)
= 2 (153)
= 306 feet.
Question 7.
The college donated land for a park. The land is 750 feet long and 25 feet wide. What is the area of the land?
The area is _____________ square feet.
Answer:
The area is 18750 square feet.
Explanation:
Given,
Length = 750 feet
Width = 25 feet
Area of the land = L × W
= 750 × 25
= 18750 square feet.